我对WSO2 Micro intergator套件中的属性调解器非常困惑。有一个字段,我需要使用Xpath提取,然后发送到AWS SQS。以下是我试图提取该字段的文档(注意,我裁剪了文档的下半部分)。
<?xml version="1.0" encoding="UTF-8"?>
<s:Envelope
xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Body>
<Waybill
xmlns="urn:oasis:names:specification:ubl:schema:xsd:Waybill-2"
xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2"
xmlns:eba="http://ns.tln.nl/eba/schemas/1-0/"
xmlns:ext="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:oasis:names:specification:ubl:schema:xsd:Waybill-2 http://docs.oasis-open.org/ubl/prd1-UBL-2.1/xsd/maindoc/UBL-Waybill-2.1.xsd http://ns.tln.nl/eba/schemas/1-0-1/EBA-Extensions.xsd">
<ext:UBLExtensions>
<ext:UBLExtension>
<ext:ExtensionContent>
<eba:ReplyAddress>
<eba:Webservice>
<eba:WebserviceEndPoint>http://www.google.com
</eba:WebserviceEndPoint>
<eba:Username>123</eba:Username>
<eba:Password>123
</eba:Password>
</eba:Webservice>
</eba:ReplyAddress>
</ext:ExtensionContent>
</ext:UBLExtension>
<ext:UBLExtension>
<ext:ExtensionContent>
<eba:ReplyAddress>
<eba:EmailAddress>[email protected]</eba:EmailAddress>
</eba:ReplyAddress>
</ext:ExtensionContent>
</ext:UBLExtension>
</ext:UBLExtensions>
我想解析 "Waybill "部分。无论我如何尝试使用该属性,结果要么是一个错误(语法),要么是一个空结果。
到目前为止,我试过的非工作代码的例子。
<property expression="//s:Body/Waybill" name="wayb" scope="default" type="STRING" xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" />
<property expression="$:Body/Waybill" name="messageBody" scope="default" type="STRING" xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns="urn:oasis:names:specification:ubl:schema:xsd:Waybill-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2" xmlns:eba="http://ns.tln.nl/eba/schemas/1-0/" xmlns:ext="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:specification:ubl:schema:xsd:Waybill-2 http://docs.oasis-open.org/ubl/prd1-UBL-2.1/xsd/maindoc/UBL-Waybill-2.1.xsd http://ns.tln.nl/eba/schemas/1-0-1/EBA-Extensions.xsd"/>
<property expression="//Waybill" name="messageBody" scope="default" type="STRING" xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns="urn:oasis:names:specification:ubl:schema:xsd:Waybill-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2" xmlns:eba="http://ns.tln.nl/eba/schemas/1-0/" xmlns:ext="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:specification:ubl:schema:xsd:Waybill-2 http://docs.oasis-open.org/ubl/prd1-UBL-2.1/xsd/maindoc/UBL-Waybill-2.1.xsd http://ns.tln.nl/eba/schemas/1-0-1/EBA-Extensions.xsd"/>
<property expression="//Waybill" name="messageBody" scope="default" type="STRING" />
不过请注意,我可以很容易地抓取body字段,这确实有效。
<property expression="$body" name="messageBody" scope="default" type="STRING"/>
我到底漏了什么?
这里的问题(就像许多xml片段的情况一样)是使用命名空间;正如专家们会告诉你的那样,它们是必要的--但在我看来,是必要的邪恶......。
处理它们的一种方法是尽可能地忽略它们;反过来,可以通过使用xpath的 local-name()
功能。
或者,在这种情况下,
//*[local-name()='Waybill']